i know wer u can get an rs2000 block, also ive fitted a 2.1 zvh n im planning 220 at the wheels , it has run 273 at wheels seen rolling road graph b4 i bought it so mayb 2.1 would b the balls, dunno bout flaffing bout wi rs2000 for wat ever power , good luck with watever u choose bud , somtimes u can listen to to many people, listen to wat u thinks best,